>>4027676>>4027768Here's your lens options if you decide to go full frame either S5 or Z5. All of these are great top tier options. Any one of these would be a great addition down the line to the kit lenses the cameras are bundled with.
If youre a landscape and nature kinda guy, I'd get a 24, but if you shoot any kind of wildlife, an 85 would be more useful. Really you really need some kind of a telephoto for that, but those are expensive for either system. If youre more into shooting people or specific singular subjects, the 85mm would be better for the more flattering focal length and compression. Depends what you shoot really but you probably already know all this. Hope i helped